:root {
  --theme-color: #242424;
  --primary-color: #91dd70ff;
  --text-color: #fff;
  --btn-bg: #333;
  --active-bg: #ddd;
  --active-color: #000;
  --icon-color: #fff;
  --border-color: #ddd;
  --iframe-bg: #fff;
}

* {
  margin: 0;
  padding: 0;
}

body {
  height: 100dvh;
  width: 100vw;
  background: var(--theme-color);
  font-family: 'Roboto', sans-serif;
}

/* Small screen fallback */
#small-screen {
  display: none;
  height: 100dvh;
  width: 100vw;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--theme-color);
  color: var(--text-color);
  text-align: center;
}

#small-screen h1 {
  font-size: 8rem;
  font-weight: 400;
}

#small-screen p {
  font-size: 1rem;
  font-weight: 300;
  max-width: 300px;
  line-height: 1.5;
  margin-top: 20px;
}

/* Main layout */
.main-container {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  width: 100vw;
}

.btn-container {
  display: flex;
  justify-content: space-between;
  padding: 10px;
  border-bottom: 0.1px solid var(--text-color);
}

.btn {
  margin: 0 5px;
  padding: 5px 10px;
  border: none;
  border-radius: 5px;
  background: var(--btn-bg);
  color: var(--text-color);
  cursor: pointer;
}

.btn.active {
  background: var(--active-bg);
  color: var(--active-color);
}

/* Special buttons */
#run-btn,
#win-btn {
  background: var(--primary-color);
  color: var(--active-color);
}

#theme-btn {
  background: var(--text-color);
  color: var(--theme-color);
}

#theme-btn span {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--theme-color);
  margin-right: 5px;
}

/* Editor + iframe */
.editor-iframe-container {
  flex: 1;
  display: flex;
  width: 100%;
}

#monaco-editor,
#iframe {
  flex: 4;
  height: 100%;
  min-width: 0;
}

#iframe {
  border-left: 1px solid var(--border-color);
  background: var(--iframe-bg);
  overflow: hidden;
}

#html,
#css,
#js {
  display: none;
  width: 100%;
  height: 100%;
}

/* Small screen rule */
@media (max-width: 630px) {
  .main-container { display: none; }
  #small-screen { display: flex; }
}